grapevine. some school nid michigan got an early start to winter break and it wasn't for snow days. the reason? the end of the world. seriously. concerns connected to the mayan prediction of the world ending on friday were part of the reason school was canceled in 25 school districts in michigan. local reports say the cancellation notice also cited rumors of violence and the recent school shooting in connecticut, even though they were investigated and determined to be false. the superintendent said administrators were reluctant to cancel school but felt it was the right decision. >> nation is a can't wait for saturday, december 22. not because they expect the world will end but so the phone will stop ringing. the "los angeles times" reports nasa is fielding ten times as many calls as usual because people are so concerned over the doomsday prediction. the agency says it decided to do everything in its power to convince everybody that conspiracy theories like rogue planet destroying the earth tomorrow are unfounded. online, panel discussion with scientists have drawn 4 million views.